In essence, whenever something is taken away from you, it helps you to build appreciation for it when it returns. Deprivation is a great tool to help you understand the important things in your life. What would happen if you deprive yourself of water? Food? Family? Friends? Work? Spending money? Sleeping? What are the consequences. If it’s really important to you, you cannot be deprived from it for long. If it’s not important, you won’t even notice it is gone.